EP0580105B1 - Navigationsgerät für Fahrzeuge mit Erkennung von Kurven und Leitung der Fahrzeuge mittels Sprache - Google Patents

Navigationsgerät für Fahrzeuge mit Erkennung von Kurven und Leitung der Fahrzeuge mittels Sprache Download PDF

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Publication number
EP0580105B1
EP0580105B1 EP93111551A EP93111551A EP0580105B1 EP 0580105 B1 EP0580105 B1 EP 0580105B1 EP 93111551 A EP93111551 A EP 93111551A EP 93111551 A EP93111551 A EP 93111551A EP 0580105 B1 EP0580105 B1 EP 0580105B1
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EP
European Patent Office
Prior art keywords
road
voice
junction
expression
route
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP93111551A
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English (en)
French (fr)
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EP0580105A1 (de
Inventor
Hiroshi Kishi
Toru Ito
Kyomi Morimoto
Shoji Yokoyama
Kenji Kuroda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aisin AW Co Ltd
Toyota Motor Corp
Original Assignee
Aisin AW Co Ltd
Toyota Motor Corp
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Priority claimed from JP19252892A external-priority patent/JP3093037B2/ja
Priority claimed from JP19357292A external-priority patent/JP3095890B2/ja
Application filed by Aisin AW Co Ltd, Toyota Motor Corp filed Critical Aisin AW Co Ltd
Priority to EP98114209A priority Critical patent/EP0877348B1/de
Publication of EP0580105A1 publication Critical patent/EP0580105A1/de
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
    • G01C21/34—Route searching; Route guidance
    • G01C21/36—Input/output arrangements for on-board computers
    • G01C21/3626—Details of the output of route guidance instructions
    • G01C21/3629—Guidance using speech or audio output, e.g. text-to-speech
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0968—Systems involving transmission of navigation instructions to the vehicle
    • G08G1/096855—Systems involving transmission of navigation instructions to the vehicle where the output is provided in a suitable form to the driver
    • G08G1/096861—Systems involving transmission of navigation instructions to the vehicle where the output is provided in a suitable form to the driver where the immediate route instructions are output to the driver, e.g. arrow signs for next turn
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0968—Systems involving transmission of navigation instructions to the vehicle
    • G08G1/096855—Systems involving transmission of navigation instructions to the vehicle where the output is provided in a suitable form to the driver
    • G08G1/096872—Systems involving transmission of navigation instructions to the vehicle where the output is provided in a suitable form to the driver where instructions are given per voice
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0968—Systems involving transmission of navigation instructions to the vehicle

Definitions

  • the present invention relates to a vehicle-guiding device which is mounted on a vehicle and which leads a driver along a route to a destination, and more specifically, it relates to a device for aurally informing a driver of a road to be selected (a guide road) at a junction.
  • vehicle-guiding device for leading a vehicle along a road to a destination by inputting the destination to the device.
  • This vehicle-guiding device has a mechanism for informing the driver of a route to be selected at a junction such as an intersection, and some mechanisms are known by which the route is displayed on a display, or a direction to be taken is announced at an intersection by voice.
  • Japanese Utility Model Application Laid-open No. 13413/1985 discloses a device in which a course to be taken is specified from 8 directions (front, rear, right and left directions as well as oblique right and left directions) on the basis of an angle to an incoming direction at a junction by a voice expression to lead the vehicle along the course.
  • a driver need not look at a display or the like, and thus leading the vehicle along the route can be achieved without having any bad influence on the driver.
  • the course to be taken is almost the same as the direction of travel, the course is judged to be straight, and so the aural guidance is omitted, whereby the unnecessary guidance is inhibited.
  • the above-mentioned conventional vehicle-guiding device has the constitution for omitting the guidance only when the route to be taken is judged to be straight on the basis of an angle to the incoming direction. Therefore, if a curved or an angled route respectively is judged to be in the range of a right or left turn, the device gives the guidance inconveniently, even when the guidance is considered to be unnecessary for the curved route.
  • An object of the present invention is to provide a vehicle-guiding device in which when a vehicle goes along the curved road, a voice guidance will not be given, and when a vehicle goes along the road other than the curved road, a voice guidance based on the curved road is carried out to achieve effective leading of the vehicle.
  • the present invention is directed to a device for leading a vehicle along a road to a destination by issuing voice guidance at a junction, and this device comprises a map information storage means for storing map information inclusive of information about the structure of the junction,
  • the voice expression is decided on the basis of this curved road. For example, in the case that while driving along a large road, the road is slightly curved on the right side at an intersection, a driver judges that this road is straight. In this case, the road judged to be straight is selected as the guide road at the intersection, but the voice expression of "go left" is selected, whereby the expression closer to the feeling of the driver can be given.
  • the present invention is also directed to a device further comprising a route memory for memorizing a route to a destination of the vehicle, and a present position recognizing means for recognizing the present position of the vehicle in addition to the above-mentioned means.
  • the above-mentioned judging means suitably judges whether or not the curved road is present at the next junction, when it is recognized by the information from the present position recognizing means that the vehicle has reached the junction.
  • the vehicle can be guided along the route to be selected.
  • the voice expression deciding means suitably controls the guidance voice expression so that the voice guidance may not be given, when: the presence of the curved road is judged by the judging means; it is judged in view of the route to the destination that the vehicle travels along the curved road; and, the vehicle actually goes along the curved road.
  • the voice guidance is omitted, whereby the unnecessary voice guidance can be prevented.
  • the above-mentioned voice expression deciding means suitably decides the voice expression of a road to be guided in compliance with an angle to the curved road, when: the presence of the curved road is judged; and the vehicle travels along a road other than this curved road.
  • the voice guidance can be given, on the basis of the curved road, using a voice expression which matches the feeling of the driver.
  • road width data and connecting angle data of the connecting road are included, and the above-mentioned judging means suitably judges whether or not the curved road is present from the road width data and the connecting angle data.
  • the judging means suitably judges on the basis of this data.
  • the judgement as to whether or not the curved road is present can be easily carried out by having the data regarding the curved road included as the data of the connecting roads.
  • Another device of the present invention has a voice data storage section for storing a plurality of patterns for the voice guidance at each junction, and the abovementioned voice outputting means reads a predetermined voice pattern from the voice data storage section on the basis of the decision of the voice expression deciding means, and then outputs the voice.
  • Still another device of the present invention further has a display guide means for displaying the route on a display to lead the vehicle, whereby the aural guidanc and the guidance by the display are carried out together.
  • the vehicle guidance can be carried out by the combination of the voice guidance and the display guidance.
  • the above-mentioned voice expression deciding means judges whether or not the decided voice expression is doubtful from the data of the structure of the junction and the connecting road to be selected by the vehicle, and if it is judged that the voice expression is doubtful, an expression for urging a driver to confirm the display is added to the output voice.
  • the decision of the voice guidance can be effectively supplemented by the guidance on the display.
  • Fig. 1 is a block diagram showing a constitution of the present invention.
  • Fig. 2 shows a display example of a device of the present invention.
  • Fig. 3 shows a display example of the device of the present invention, and it is an enlarged view of an intersection at which a vehicle turns right or left.
  • Fig. 4 is a flow chart illustrating the overall operation of the present invention.
  • Fig. 5 is an illustrative view of a structure of a junction.
  • Fig. 6 is a flow chart for judging presence/absence of a curved road.
  • Fig. 7 is another flow chart for judging presence/absence of the curved road.
  • Fig. 8 is a flow chart of voice selection processing in the case that the curved road is present.
  • Fig. 9 is an illustrative view showing the allocation of a voice expression in the case that the curved road is present.
  • Fig. 10 is a flow chart of the voice selection processing in the case that the curved road is absent.
  • Fig. 11 is a flow chart illustrating the check and correcting operation of a voice expression.
  • Fig. 12 shows an illustrative view regarding the alternation of the expression.
  • Fig. 13 is a block diagram showing the constitution of another embodiment.
  • Fig. 14 shows an illustrative view regarding a route guide at a rotary intersection in the embodiment.
  • Fig. 15 shows an illustrative view regarding the route guide at another rotary intersection in the embodiment.
  • Fig. 1 is a block diagram showing the overall constituition, and this constitution has a route memory 10 for memorizing a route to a destination and a present position calculating section 12 for calculating a present position of a car.
  • the route memory 10 and the present position calculating section 12 are connected to an arithmetic section 13.
  • a voice expression selection processing section 14 is provided in this arithmetic section 13.
  • the arithmetic section 13 is also connected to a map information storage section 15 for storing the information of roads, place names, building names, river names and the like, and in this map information storage section 15, a junction data storage section 16 for storing data about junctions of roads is provided.
  • the arithmetic section 13 is connected to a voice data storage section 18 for storing data about voice expressions. In order to output the guidance voice, the arithmetic section 13 is connected to a speaker 22 via an amplifier 20.
  • the above-mentioned junction data storage section 16 is composed of a connecting road number data storage section 16a, a connecting angle data storage section 16b and a connecting road wide data storage section 16c.
  • a route calculating section 24 and an expression guide control section 26 are provided, and the arithmetic section 13 is connected to an input section 28 in which various data are input by the operation of a driver and a display section 30 for various displays.
  • a driver first operates the input section 28 to input the destination data.
  • the route calculating section 24 decides a route to the destination from the destination data and the present position data (a starting point may be input, or the present position recognized by the car may be utilized as the starting point) in a predetermined route research manner.
  • the obtained route is memorized in the route memory 10.
  • the present position calculating section 12 always calculates the present position from data obtained by GPS (a global positioning system) or a dead reckoning method for detecting the present position from a running state of the car. With the traveling of the car, the present position calculating section 12 renews the present position and feeds its data to the arithmetic section 13.
  • the arithmetic section 13 reads the map information in the vicinity of the car from the map information storage section 15 and displays this map information on the display section 30 together with a present car position, driving direction and the route memorized in the route memory section 10 so that the information may overlap them.
  • the display section 30 is arranged in an installment panel in the vicinity of a driver's seat, and the driver can look at the display section 30 to confirm the position of the car and to also obtain the information of the subsequent route.
  • Fig. 2 One example of this display is shown in Fig. 2.
  • the selected route is represented by a bold solid line 100
  • another road is represented by a thin solid line 102.
  • the position of the car is shown by a circular symbol 104
  • the driving direction of the car is shown by a wedge-like arrow 106.
  • the plurality of roads can be discriminated from each other by the thickness of the lines or by the use of different colors.
  • the display changes into such a view as is shown in Fig. 3, in which an intersection name 110 and a distance 112 from the car to the intersection are displayed.
  • guidance is given aurally. That is, when the car comes up to the junction, the voice expression selection processing section 14 selects the guidance voice data of this junction from the expression patterns stored in the voice data storage section 18, and the thus selected expression pattern is then fed to the speaker 22 via the amplifier 20.
  • the voice guidance is given so that the driver can select a certain route memorized in the route memory section 10. In consequence, the driver can recognize and select the road to be taken at each junction in accordance with the guide output from the speaker 22.
  • the voice expression selection processing section 14 selects the expression for the road selection which is considered to be most suitable from the expression patterns previously stored in the voice data storage section 18 on the basis of data such as the connecting road number, the connecting angle, the connecting road width and the like stored in the junction data storage section 16. Now, the operation of the voice expression selection processing will be described in reference to Fig. 4.
  • the voice expression selection processing section 14 selects the next intersection (the nearest junction) on the route on the basis of the data fed from the route memory section 10 (S1). Then, road number data (A), connecting angle data (B) and road width data (C) at the selected junction are read from a connecting road number data storage section 16a, a connecting angle data storage section 16b and a connecting road wide data storage section 16c of the junction data storage section 16, respectively (S2). Next, the voice expression selection processing section judges whether or not a curved or an angled road, respectively can be established at the junction on the basis of the data (A), (B) and (C) (S3).
  • the curved road In the case that the curved road is established, it is judged whether or not the road to be selected (the guide road) is the curved road on the basis of the data from the route memory section 10 (S4).
  • the aural guidance is unnecessary, and therefore the guidance is not given (S5) and the processing is brought to an end.
  • the voice expression indicating the presence of the curved road is selected (S6).
  • the voice expression indicating the absence of the curved road is selected (S9).
  • the selected expression is checked and corrected (S7), and the processed expression is then fed to the speaker 22 via the amplifier 20 to output the voice (S8).
  • the different voice expression is selected in accordance with the presence or absence of the curved road at the junction. That is, when the curved road is present, the curved road is selected as the basis of the expression for specifying another road. Then, the voice expression having the meaning of "left of the curved road” or "right of the curved road” can be selected, whereby the voice guidance which matches with the feeling of the driver can be issued.
  • the proper voice guidance can be given on the basis of an angle to an incoming direction, and when the road is divided into two at the junction, simple guidance corresponding thereto can be given. Furthermore, when the guide road is the curved road, no guidance is necessary, even if the curved road has a slight angle to the incoming direction. Therefore, the guidance is omitted, whereby unnecessary guidance can be prevented.
  • Fig. 5 is an illustrative view showing an example of the junction.
  • the road on which the car is driving is represented by Rs and three roads connecting to the junction are represented by R1 to R3.
  • the widths of the roads R1 to R3 are denoted by W1 to W3, respectively.
  • the connecting angles of the roads R1 to R3 to the direction of the incoming road Rs are ⁇ 1 to ⁇ 3, respectively.
  • Data regarding the junction are stored in the junction data storage section 16, and thus, in this section, there are stored the number of the connecting roads, the connecting angles ⁇ 1 to ⁇ 3 and the road width data W1 to W3 of the roads R1 to R3 at this junction.
  • the voice expression selection processing section 14 judges presence/absence of the curved road in accordance with flow charts in Figs. 6 and 7.
  • data about the direction of an extension line of the incoming road Rs and data of another road Ri linking with the junction are input to the voice expression selection processing section 14.
  • the i of Ri is a symbol for discriminating the road, and in an example of Fig. 5, i is any of 1 to 3.
  • the width Wi of each road Ri and an angle ⁇ 1 of the road Ri to the extension line of the incoming road Rs are also input thereto (S101). For example, in the case of the example shown in Fig. 5, W1 to W3 and ⁇ 1 to ⁇ 3 of the respective R1 to R3 are input.
  • the road Rm can be tentatively judged to be the curved road.
  • the obtained judgement is additionally treated to judge whether or not the curved road is present. This additional judgement will be described in reference to Fig. 8.
  • the road Rm decided in the above manner is utilized as a base, and another road is represented by Rmi.
  • the width of the road Rmi is represented by Wmi
  • an angle of the road Rmi to the road Rm is represented by ⁇ mi, wherein the attached character i is an integer of i > 0 but it may be a negative integer.
  • the angle ⁇ Mi of the road Rmi other than the road Rm is determined, and it is judged whether or not the road Rmi having ⁇ mi in the range ⁇ 120° is present. If such a road is not present, it is certain that the road Rm is judged to be the curved road, and so the road Rm is judged to be the curved road and it is decided that the curved road is present (S203).
  • the road Rm is the widest road, it is correct that the road Rm should be regarded as the curved road, and thus it is judged that the curved road is present (S203).
  • the road Rm does not have the large width in S205, it is doubtful that the road Rm is the curved road, and it is judged that the curved road is not present (S207).
  • a suitable value such as 0.8 can be set.
  • an angle of the road Rm to the extension line of the driving road Rs is represented by ⁇ m (S301), and as shown in Fig. 9, the expression of a voice guidance is allotted on the basis of a degree of ⁇ m, an area containing a road Ra to be next taken (a guide road) and the like (S302).
  • the voice expression is allotted in accordance with the area of the guide road such as (1) “turn so as to return left”, (2) “turn left”, (3) “go right”, (4) “turn right”, and (5) "turn so as to return right". Since the curved road Rm is on the left side, the expression of (3) "turn right” is actually allotted in a predetermined range placed in front of the incoming road. The reason for this is as follows: the driver tends to judge that the curved road is in a substantially straight direction, and therefore in order to clearly distinguish from the curved road, the expression of "go right” is more proper. As typical expressions, variations such as “turn so as to return to this side", “largely turn to this side” are possible.
  • the expression of "go obliquely left” or “go obliquely right” is used for the road in a small angle range on left or right of the curved road, whereby the suitable expression can be given for each area where the substantially straight road is present. Furthermore, if the curved road is curved to a right direction, the expression corresponding to the above-mentioned case where the road is curved to the left direction is employed.
  • the voice expression in the case that the curved road is absent will be described in reference to Fig. 10.
  • the expression for the case that the curved road is substantially straight (-10 ⁇ ⁇ m ⁇ 10) is allotted to the area containing the guide road Ra on the basis of the extension line of the incoming road Rs (S402).
  • Fig. 12 (e) if there is only one other road Rh, it is judged whether or not the expression for discriminating the guide road Ra from the other road Rh is usable. For this purpose, it is judged whether or not a road is present in an adjacent expression area opposite to the other road Rh on the basis of the guide road Ra (S506). If the road is absent in the adjacent expression area, it is judged whether or not right and left in the expression of the adjacent area and the expression of the area containing the road Ra are reversed.
  • the expression of the adjacent area changes, for example, from “go left” to “go right” and in the case that the expression of the road present in the same area is altered to that of the adjacent area, the driver might be rather confused by the change of the expression, and therefore the correction of the expression is not carried out.
  • the expression of the area adjacent to the guide road Ra is allotted (S508). For example, when the expression "turn right” is changed to the expression "go right", the driver can be informed of the guide road Ra near to a substantially straight direction to the other road Rh largely curved to the right.
  • the indication which matches with the feeling of the driver can be given on the basis of the curved road. Even if the curved road is absent and if only one other road is present in addition to the guide road, suitable guidance can be given. In the case that the road for the same expression as in the guide road is present in addition to the guide road, the expression is changed to a better expression or attracts the driver's attention in compliance with the situation. Therefore, according to the car leading device using the voice of this embodiment, the route guidance can always be carried out in compliance with the requirement of the driver.
  • Fig. 13 shows another embodiment of the present invention, and a junction data storage section 16 contains a curved road data storage section 16d.
  • This curved road data storage section stores data regarding which road of all the roads at a junction is a curved road. That is, if three roads A, B and C are present at the junction, and when a car comes along the road A, the road B is the curved road; when the car comes along the road B, the road A is the curved road; or when the car comes along the road C, the curved road is absent.
  • the data storage section has the data that "a curved road is present, and the curved road is A" for the road A, the data that "a curved road is present, and a curved road is B" for the road B, and the data that "a curved road is absent” for the road C.
  • the incoming road is decided, it can be judged whether or not the curved road is present or which road is the curved road from the above-mentioned data.
  • a route guide special to the rotary intersection is carried out.
  • the route guide in compliance with an outgoing direction is carried out. That is, the guidance content is changed in accordance with an angle ( ⁇ ) made by an incoming road and a road to be guided.
  • the position where the route guidance is carried out is the same as in the case of a usual intersection. For example, when a car travels on a road having one lane on one side, the guidance is given 300 m in front of the intersection, and when the car travels on a road having two lanes on one side, the guidance is given 700 m in front of the intersection. In addition, even when the intersection draws immediately near, the route guidance is given.
  • the route guidance at the rotary intersection is classified into “turn left”, “turn right”, “go straight” and the like in accordance with an angle ( ⁇ ) made by the incoming road and the outgoing road, but the guidance may be issued in compliance with an angle ( ⁇ ) turning around the rotary.
  • an angle made by a direction Y1 of the incoming road and a direction Y2 of the outgoing road is 180°, but the angle turning around the rotary intersection is about 100° and thus in this case, it is judged that the guidance is "turn left”.
  • the driver can drive in accordance with the rotary intersection. That is, at the rotary intersection, even when the driver turns right, it is necessary that he turns left to get onto the rotary junction, and so he can prepare for the rotary intersection.
  • a voice expression selection processing section recognizes a route from data from a route memory.
  • a vehicle When a vehicle has reached a junction, it is judged whether or not a curved road is present at the junction on the basis of connecting road number data from a junction data storage section, connecting angle data and connecting road width data.
  • the content of the voice expression is changed in accordance with a case where the curved road is present or another case where the curved road is absent. Particularly, when the curved road is present, the direction of this curved road is added as a base of the voice expression. Therefore, the voice expression which matches with the feeling of a driver can be carried out to achieve suitable car guidance.

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  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Multimedia (AREA)
  • Navigation (AREA)
  • Traffic Control Systems (AREA)

Claims (12)

  1. Vorrichtung zum Leiten eines Fahrzeugs entlang einer Straße zu einem Ziel durch Ausgabe einer Sprachanweisung entlang einer vorbestimmten Strecke, wenn das Fahrzeug auf der Strecke fährt, die dazu festgesetzt ist, zu dem eingegebenen Ziel zu führen, mit:
    einer Karteninformationsspeichereinrichtung (15) zum Speichern von Karteninformationen einschließlich Informationen über die Struktur des Knotens,
    einer Beurteilungseinrichtung (13) zum Beurteilen, ob eine durch sich unter Winkeln kreuzenden Straßen ausgebildete abknickende Straße an dem Knoten vorhanden ist oder nicht, aus Daten bezüglich sich an dem Knoten verbindender Straßen, indem Verbindungswinkel und Breiten von all den mit der nächsten Kreuzung verbundenen Straßen erfaßt werden, und zum Bestimmen, ob eine durch Straßen ausgebildete abknickende Straße ausgewählt ist oder nicht, wobei die Straßen die gegenwärtige Straße und die auszuwählende Straße sind, auf der Grundlage der Strecke zum Herausfahren aus der nächsten vor dem Fahrzeug liegenden Kreuzung,
    einer Sprachausdruckentscheidungseinrichtung (13, 14) zum Entscheiden, ob eine Streckenanweisung in Übereinstimmung mit dem erfaßten Ergebnis des Beurteilungseinrichtung (13) ausgegeben wird oder nicht, und
    einer Sprachausgabeeinrichtung (20, 22) zum Ausgeben der Streckenanweisungssprache in Übereinstimmung mit der entscheidung der Sprachausdruckentscheidungseinrichtung (13, 14).
  2. Vorrichtung nach Anspruch 1, mit
    einem Streckenspeicher (10), der zum Speichern der Strecke zu dem Ziel des Fahrzeugs vorgesehen ist,
    einer Momentanpositionserkennungseinrichtung (12), die zum Erkennen der Momentanposition des Fahrzeugs vorgesehen ist, und wobei
    die Beurteilungseinrichtung (13) weiter beurteilt, ob die abknickende Straße an der nächsten Verzweigung vorhanden ist oder nicht, wenn durch die Informationen aus der Momentanpositionserkennungseinrichtung (12) erkannt wird, daß das Fahrzeug den Knoten erreicht hat.
  3. Vorrichtung nach Anspruch 2, wobei die Sprachausdruckentscheidungseinrichtung (13, 14) den Sprachanweisungsausdruck derart bestimmt, daß die Sprachanweisung nicht gegeben werden darf, wenn das Vorhandensein der abknickenden Straße durch die Beurteilungseinrichtung (13) beurteilt wird und es in Hinsicht auf die Strecke zu dem Ziel beurteilt wird, ob das Fahrzeug entlang der abknickenden Straße fährt oder nicht.
  4. Vorrichtung nach Anspruch 2, wobei die Sprachausdruckentscheidungseinrichtung (13, 14) den Sprachausdruck einer anzuweisenden Straße gemäß einem Winkel zu der abknickenden Straße entscheidet, wenn das Vorhandensein der abknickenden Straße beurteilt wird und wenn das Fahrzeug entlang einer von dieser abknickenden Straße verschiedenen Straße fährt.
  5. Vorrichtung nach Anspruch 2, wobei in den Daten hinsichtlich der Struktur des Knotens und der Verbindungsbedingungen in der Karteninformationsspeichereinrichtung (15) Straßenbreitendaten, Verbindungswinkeldaten der sich verbindenden Straße und die Anzahl der verbundenen Straßen umfaßt sind und die Beurteilungseinrichtung aus den vorstehend genannten Daten beurteilt, ob die abknickende Straße und die Verbindungsbedingungen vorhanden sind oder nicht.
  6. Vorrichtung nach Anspruch 2, wobei in den Daten hinsichtlicht der Struktur des Knotens in der Informationsspeichereinrichtung Daten enthalten sind, ob für jede an den Knoten ankommende Straße eine sich verbindende Straße die abknikkende Straße ist oder nicht, wobei die Beurteilungseinrichtung (13) auf der Grundlage der Daten dieser abknickenden Straße beurteilt.
  7. Vorrichtung nach Anspruch 2, wobei ein Sprachdatenspeicherabschnitt (18) zum Speichern einer Vielzahl von Mustern zur Sprachanweisung bei jedem Knoten vorgesehen ist, wobei die Sprachausgabeeinrichtung (20, 22) ein vorbestimmtes Sprachmuster aus dem Sprachdatenspeicherabschnitt (18) auf der Grundlage der Entscheidung der Sprachausdruckentscheidungseinrichtung liest und dann die Sprache ausgibt.
  8. Vorrichtung nach Anspruch 2, wobei eine Anzeigeführungseinrichtung (26, 30) zum Anzeigen der Strecke auf einer Anzeige (30) zum Führen des Fahrzeugs vorgesehen ist, wodurch die Anweisung durch die Sprache und die Anweisung durch die Anzeige zusammen ausgeführt werden.
  9. Vorrichtung nach Anspruch 8, wobei bei einer Entscheidung des Sprachausdrucks an dem Knoten die Sprachausdruckentscheidungseinrichtung (13, 14) aus den Daten der Struktur des Knotens und der durch das Fahrzeug auszuwählenden verbindenden Straße beurteilt, ob der bestimmte Sprachausdruck zweifelhalft ist oder nicht, und, wenn beurteilt wird, daß der Sprachausdruck zweifelhalf ist, ein Ausdruck der ausgegebenen Sprache hinzugefügt wird, um einen Fahrer zum Bestätigen der Anzeige aufzufordern.
  10. Vorrichtung nach Anspruch 1, wobei eine Vielzahl der in Übereinstimmung mit einem Verbindungswinkel eingeteilten Anweisungsausdruck gespeichert ist und ein angemessener Anweisungsausdruck gemäß einem durch eine vom Knoten herausführende Straße und der Straße, auf der das Fahrzeug sich nun bewegt, ausgebildeten Winkel bestimmt und ausgegeben wird, der durch die Beurteilungseinrichtung (13) beurteilt wird.
  11. Vorrichtung nach Anspruch 1, wobei die Beurteilungseinrichtung, bevor das Fahrzeug einen Knoten auf einer gegenwärtigen Straße der Strecke erreicht, auf der Grundlage der Karteninformationen beurteilt, ob der Knoten auf der Strecke eine gekrümmte Straße umfaßt, wobei die gekrümmte Straße mit dem Knoten unter einem Winkel geringer als ein vorbestimmter Winkel verbunden ist, wobei der Winkel der gekrümmten Straße hinsichtlich der Richtungen der gegenwärtigen und der gekrümmten Straße gemessen wird.
  12. Vorrichtung nach Anspruch 4, wobei die Sprachausdruckentscheidungseinrichtung den Sprachanweisungsausdruck in Übereinstimmung mit einem Winkel zwischen Richtungen der gekrümmten Straße und einer anderen Straße bestimmt, wenn der Knoten eine gekrümmte Straße umfaßt, die jedoch nicht auf der Strecke ist.
EP93111551A 1992-07-20 1993-07-19 Navigationsgerät für Fahrzeuge mit Erkennung von Kurven und Leitung der Fahrzeuge mittels Sprache Expired - Lifetime EP0580105B1 (de)

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EP98114209A EP0877348B1 (de) 1992-07-20 1993-07-19 Navigationsgerät für Fahrzeuge mit Kreisverkehrerkennung

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JP192528/92 1992-07-20
JP19252892A JP3093037B2 (ja) 1992-07-20 1992-07-20 車両用経路誘導装置
JP19357292A JP3095890B2 (ja) 1992-07-21 1992-07-21 車両用経路誘導装置
JP193572/92 1992-07-21

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Publication number Publication date
DE69323355T2 (de) 1999-08-26
US5444629A (en) 1995-08-22
DE69333255D1 (de) 2003-11-20
EP0877348A3 (de) 2000-05-24
DE69333255T2 (de) 2004-08-12
EP0877348A2 (de) 1998-11-11
US5687083A (en) 1997-11-11
EP0580105A1 (de) 1994-01-26
DE69323355D1 (de) 1999-03-18
EP0877348B1 (de) 2003-10-15

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